uefi-macros: fix new clippy lint

Author: nicholasbishop

uefi-macros/src/lib.rs

@@ -186,7 +186,7 @@ pub fn entry(args: TokenStream, input: TokenStream) -> TokenStream {
  }
  if !f.sig.generics.params.is_empty() {
  errors.append_all(err!(
- &f.sig.generics.params,
+ f.sig.generics.params,
  "Entry method should not be generic"
  ));
  }